The quantitation of how much time constitutes short and recent varies by disease and by context, but the core denotation of acute is always qualitatively in contrast with chronic, which denotes long-lasting disease (for example, in acute leukemia and chronic leukemia).
View full size image. Thomas Edison is usually credited with the invention of the light bulb, but the famous American inventor wasn't the only one who contributed to the development of this revolutionary technology.
Who Invented The Incandescent Light Bulb? It wasnât Thomas Edison. What Edison did was improve on the design in a patent he purchased from two earlier inventors, Henry Woodward and Matthew Evans. By 1879, Edison had switched to a carbon filament and the oxygenless enclosure, and had produced a bulb that would last for forty hours.